Josh
There's a bit of a discussion here
http://fefcholden.org.au/forum/index.php/topic,14399.0.htmlThe contact person is now Steve Evers, not Jim
I bought some of these springs but an mot really happy with the effectiveness of them - they are not quite the right shape. They needed to be squashed a bit as they bend was too high, but they also need more of a kink to hold the doors open, and probably a bit more of an upward angle. The problem was, I believe, that the guy who made them up never actually saw them in place and doing what they were supposed to do.
Next time I have the doors off (long time in the future, I hope) I'll try to source some old hinges from somewhere and salvage whatever genuine springs I can find, then rivet them in. Each front door needs 2 springs (upper and lower) on one hinge per door. From what I've seen there is usually only one spring broken on most doors. That might mean the remaining one is a bit fragile, but at least it will work for a while. In addition, the top hinge is usually worn where the spring contacts it. Swap it with the lower hinge so the springs have full width metal to "grab".
Martin